Copper Carnelian Necklace Set. Two different types of copper chain flank this very different necklace set. On the one side, three strands of rectangular copper links join five beautiful beads that span the color spectrum of Carnelian stones, and the other side with copper chain filagree and beads to end with a copper lobster clasp. The necklace measures 20 inches long and the matching earrings have an almost 2 inch drop.